ТЕОРЕТИЧЕСКОЕ ОБОСНОВАНИЕ ЧАСТОТЫ ВРАЩЕНИЯ ЛОПАСТНОГО ПОГРУЗЧИКА В ЦИРКУЛЯЦИОННОМ СМЕСИТЕЛЕ

Abstract

The purpose of the research is to substantiate the critical rotation speed of the working body based on force analysis and modeling of the movement of particles of a bulk product in a horizontal loader with radial blades located in a circulation mixer. The research methodology involved substantiating the maximum rotation speed of the loader working body based on an analysis of the forces acting on particles as they move by the loader blades and fall into the tray during flight. Based on the obtained expressions, the values of the indicators were modeled to analyze and substantiate rational values. The implementation of a numerical analysis of the obtained expressions based on force analysis and process modeling with the Mathcad mathematical package made it possible to identify the critical values of the rotation speed of the working body of a paddle loader based on the condition for the possibility of material coming off the blade and the condition for the possibility of particles flying from the blade into the receiving tray. Due to the need for material to flow off the blades and the rotation speed reduction factor of 0.9, the rotation speed of a blade loader with an outer diameter of blades of 0.24 m and an inner diameter of 0.17 m should not exceed 77 min-1 . The highest rotation speed of the working body shaft at which particles of material will enter the receiving tray area from the outer end of the blade is 43 min-1 , and from the inner end - 73 min-1 . In the process of manufacturing a circulating mixer with a radial blade loader for experimental studies, it should be possible to change the rotation speed up to 43 min-1 . To test theoretical principles in exploratory experiments, it is necessary to provide for the possibility of changing the rotation speed of the blade loader shaft to 70 min-1 .